JP2013236471A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an excessive electromagnetic induction current from flowing through an electromagnetic shield member, when three power cables conducting symmetrical three-phase AC electricity are surrounded individually by three electromagnetic shield members.SOLUTION: A wire harness 10 includes three power cables 9 for conducting symmetrical three-phase AC electricity, at least nine conductive electromagnetic shield members 1, and at least two relay short circuit members 2. The electromagnetic shield members 1 individually surrounds the periphery of at least three partial regions sectioned at at least two relay points of the three power cables 9. The relay short circuit members 2 are arranged at respective relay points on both sides thereof, and have at least three conductive members for electrically connecting two electromagnetic shield members 1 surrounding the periphery of different power cables 9, respectively.

Description

  The present invention relates to a wire harness including a conductive electromagnetic shield member surrounding a wire.

  2. Description of the Related Art Conventionally, a wire harness laid on a vehicle represented by an automobile may include a conductive electromagnetic shield member that surrounds an electric wire and shields noise electromagnetic waves. The electric wire passed through the hollow portion of the electromagnetic shield member is usually a non-shielded electric wire. An unshielded electric wire is an insulated wire that is not covered with an electromagnetic shielding member such as a braided wire.

  For example, as disclosed in Patent Document 1, a vehicle wire harness may include a braided wire made of a metal wire knitted in a cylindrical shape as an electromagnetic shield member. The braided wire is a cylindrical electromagnetic shield member that can be deformed according to the deformation of the electric wire.

  Moreover, as shown in Patent Document 2, a wire harness laid in a place exposed to the outside, such as the lower surface (under the floor) of a bottom plate in an automobile, has an electric wire protection pipe that is a cylindrical metal member surrounding the electric wire. There is a case to prepare. The electric wire protection pipe is a member that protects the electric wire from foreign matters such as gravel scattered from the road, and at the same time, is an electromagnetic shielding member that shields noise electromagnetic waves.

  In a wire harness including an electromagnetic shield member, both ends of the electric wire are wired into the housing from an opening of a metal housing that accommodates a device to be connected, and both ends of the electromagnetic shield member are connected to the metal housing. Electrically connected. Further, the metal casing is electrically connected to a reference potential body such as an automobile body. Therefore, the electromagnetic shield member and the reference potential body form a closed loop together with other conductive members such as a casing.

  When the electric wire surrounded by the electromagnetic shield member is a power cable that transmits an alternating current, an electromagnetic induction current flows in a closed loop formed by the electromagnetic shield member and the reference potential body. Further, the electromagnetic induction current flowing through the electromagnetic shield member increases as the current value and frequency of the alternating current flowing through the power cable increase.

  Further, in an electric vehicle such as an electric vehicle and a hybrid vehicle, a three-phase motor is adopted, and a wire harness connected to the three-phase motor includes three power cables that conduct electricity of symmetrical three-phase AC. In this case, the phase shift of electricity due to electromagnetic induction generated for each phase of AC electricity is the same. In the following explanation, when the term three-phase alternating current is used without any special explanation, it means a symmetrical three-phase alternating current, that is, a three-phase alternating current in which the respective phase shifts (120 degrees) are the same. Means.

  When three power cables that conduct electricity of three-phase alternating current are collectively surrounded by one electromagnetic shield member, electromagnetic induction caused by alternating current of each phase flowing through each of the three power cables is one It occurs in electromagnetic shielding members. Therefore, the three-phase electricity generated by electromagnetic induction and having different phases are mixed in one electromagnetic shield member and cancel each other.

  On the other hand, when three power cables that conduct electricity of three-phase alternating current are individually surrounded by electromagnetic shield members, electromagnetic induction due to alternating current of each phase flowing through each of the three power cables Each occurs separately. For the convenience of wiring, the wire harness may be required to be individually surrounded by an electromagnetic shield member for each of the three power cables that conduct three-phase alternating current electricity.

JP 2006-344398 A JP 2011-196367 A

  In recent years, in electric vehicles such as electric vehicles and hybrid vehicles, higher power and higher frequency of alternating current electricity supplied from an inverter circuit to a three-phase motor have been advanced. Therefore, when the wire harness includes three electromagnetic shield members that individually surround three power cables that conduct three-phase AC electricity, an excessive electromagnetic induction current easily flows to each electromagnetic shield member. Further, even when the power cable and the electromagnetic shield member are long, an excessive electromagnetic induction current tends to flow through each electromagnetic shield member.

  When an excessive electromagnetic induction current flows through the electromagnetic shield member, there arises a problem that peripheral members are damaged by heat generated by the electromagnetic shield member.

  An object of the present invention is to prevent an excessive electromagnetic induction current from flowing through an electromagnetic shield member when three power cables that conduct electricity of symmetrical three-phase alternating current are individually surrounded by the electromagnetic shield member. .

The wire harness which concerns on the 1st aspect of this invention is provided with each component shown below.
(1) The first component is three power cables that are arranged in parallel at intervals to conduct electricity of symmetrical three-phase alternating current.
(2) The second component includes at least nine conductive electromagnetic shielding members individually surrounding each of at least three partial areas divided at at least two relay points in each of the three power cables. It is.
(3) The third component is disposed at each of the relay points, and is electrically connected between the two electromagnetic shield members that are located on both sides of the relay point and surround the different power cables. At least two relay short-circuit members each having at least three conductive members.

  The wire harness according to the second aspect of the present invention is an aspect of the wire harness according to the first aspect. In the wire harness according to the second aspect, each of the relay short-circuit members is non-conductive that collectively holds the end portions of the six electromagnetic shield members located on both sides of the relay location via the conductive members. Of holding members.

  The wire harness according to the third aspect of the present invention is an aspect of the wire harness according to the second aspect. The wire harness which concerns on a 3rd aspect is connected with the said relay short circuit member, and is further equipped with the nonelectroconductive fastener fastened to the edge of the through-hole of a plate-shaped support body.

  In the wire harnesses according to the first to third aspects, the three power cables that conduct electricity of symmetrical three-phase alternating current are individually separated by at least nine electromagnetic shield members for each of at least three partial regions that are divided. being surrounded. Therefore, the electromagnetic induction by the alternating current of each phase flowing through each of the three power cables occurs individually for each electromagnetic shield member. However, at each of at least two relay locations, the two electromagnetic shield members surrounding the power cables that conduct AC electricity of different phases are electrically connected by the three conductive members. Therefore, in the nine electromagnetic shielding members surrounding the three partial regions of the three power cables, the three-phase electromagnetic induction electricity having different phases are mixed and cancel each other. As a result, an excessive electromagnetic induction current is prevented from flowing through the electromagnetic shield member.

  Further, in the wire harness according to the second aspect, the three power cables are arranged in parallel with a gap therebetween by the sandwiching member that constitutes the relay short-circuit member together with the electromagnetic shield members surrounding the power cables. Retained. Thereby, the problem which causes a spark discharge when the electromagnetic shielding members are too close can be avoided. In addition, since the relay short-circuit member also serves as a spacer for maintaining the distance between the nine electromagnetic shield members surrounding the three power cables, an effect of reducing the number of parts can be obtained. Further, unlike the case where the power cable and the electromagnetic shield member are passed through the cylindrical member from their end portions, the holding member of the relay short-circuit member can be easily connected to the relay location of the electromagnetic seal member which is an intermediate portion of the power cable. It can be attached to.

  Moreover, the wire harness which concerns on a 3rd aspect is provided with the nonelectroconductive fastener connected with the relay short circuit member. Therefore, in the process of laying the wire harness on the vehicle, the work of fixing the relay location of the electromagnetic shield member to a support body such as the body of the vehicle is facilitated.

1 is a perspective view of a wire harness 10 according to a first embodiment of the present invention. It is a top view of the wire harness 10 laid in the vehicle. 2 is an exploded perspective view of a main part of the wire harness 10. FIG. It is a disassembled perspective view of the principal part of 10 A of wire harnesses which concern on 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention.

<First Embodiment>
First, the wire harness 10 according to the first embodiment of the present invention and the relay short-circuit member 2 included in the wire harness 10 will be described with reference to FIGS. As shown in FIGS. 1 and 2, the wire harness 10 includes at least three power cables 9, at least nine electromagnetic shield members 1, and at least two relay short-circuit members 2.

<Power cable>
The power cable 9 is an insulated wire composed of a core wire 91 made of a conductive material and an insulating coating 92 made of an insulating material covering the periphery of the core wire 91. For example, the terminal fitting 8 is connected to the core wire 91 at the end of the power cable 9. In the example shown in FIGS. 1 and 2, the wire harness 10 includes three power cables 9 arranged in parallel at intervals. However, it is also conceivable that the wire harness 10 includes two or more sets of three power cables 9.

  It is also conceivable that the wire harness 10 further includes a cable holding member that holds the end portions of the three power cables 9 in a certain positional relationship. In this case, the cable holding member holds the end portions of the three power cables 9 arranged in parallel in a fixed positional relationship and electrically insulates the three power cables 9 from each other. For example, it is conceivable that the cable holding member is a non-conductive synthetic resin member. In this case, it is conceivable that the cable holding member is a member formed by insert molding using the plurality of power cables 9 as insert members.

<Electromagnetic shield member>
The electromagnetic shielding members 1 are conductive members that are arranged in parallel at intervals and individually surround the power cables 9. The electromagnetic shield member 1 individually surrounds each of at least three partial areas divided at at least two relay points in each power cable 9.

  When there are three power cables 9 and M relay locations (where M is an integer equal to or greater than 2), the number of electromagnetic shield members 1 is {3 × (M + 1)}. Accordingly, the wire harness 10 includes at least nine electromagnetic shield members 1. In the example shown in FIGS. 1 and 2, there are two relay points, and the wire harness 10 includes nine electromagnetic shield members 1 arranged in parallel three by three.

  For example, it is conceivable that the electromagnetic shield member 1 is a metal pipe member surrounding the power cable 9. In this case, it is conceivable that the pipe member is made of a material whose main component is a metal such as iron, stainless steel, or aluminum. It is conceivable that a plated layer or a paint layer is formed on the surface of the pipe member as necessary.

  It is also conceivable that the electromagnetic shield member 1 is a braided wire made of a metal wire knitted in a cylindrical shape. In this case, it is conceivable that the braided wire is composed of a wire material mainly composed of a metal such as copper, stainless steel, or aluminum.

  It is also conceivable that a metal cloth that is a woven fabric of metal yarn is employed as the electromagnetic shield member 1. In this case, the metal cloth is wound around the power cable 9 and formed into a cylindrical shape.

  The metal cloth is, for example, a cloth having a network structure in which metal threads mainly composed of copper are woven so as to intersect each other in the vertical and horizontal directions. In addition, the metal cloth may have a structure in which a flexible film made of a resin material is attached to a metal yarn cloth. The electromagnetic shielding member 1 made of a braided wire or a metal cloth has conductivity and flexibility.

  For example, as shown in FIG. 2, in a state where the wire harness 10 is laid on the vehicle, both ends of the power cable 9 enter the housing 7 from the opening of the metal housing 7 that houses the device to be connected. Wired. Further, both end portions of the electromagnetic shield member 1 are electrically connected to the metal casing 7.

  In the example shown in FIG. 2, the electromagnetic shield member 1 and the housing 7 are connected by the connection fitting 71, but the means for connecting them is not limited to the connection fitting 71. Further, the metal casing 7 is electrically connected to a reference potential body 70 such as a body of an automobile. Therefore, the electromagnetic shield member 1 and the reference potential body 70 form a closed loop together with other conductive members such as the housing 7.

<Relay short-circuit member>
The relay short-circuit member 2 is disposed at each relay location of the electromagnetic shield member 1. Therefore, the wire harness 10 includes at least two relay short-circuit members 2. Each relay short-circuit member 2 includes three pairs of conductive members 3 and a pair of exterior members 4.

  Hereinafter, the configuration of the relay short-circuit member 2 will be described with reference to FIG. In the following description, u, v, and w are identification codes of the three power cables 9. In the following description, for convenience, each of the three power cables 9 is distinguished as a first power cable 9u, a second power cable 9v, and a third power cable 9w.

  And the electromagnetic shielding member 1 surrounding the partial area located on one side of the relay location in the first power cable 9u with reference to a certain relay location is referred to as a first-stage first electromagnetic shield member 1au. Moreover, the electromagnetic shielding member 1 surrounding the partial region located on the other side of the relay location in the first power cable 9u is referred to as a subsequent first electromagnetic shielding member 1bu.

  Similarly, the electromagnetic shield member 1 surrounding a partial region located on one side of the relay location in the second power cable 9v with a certain relay location as a reference is referred to as a pre-stage second electromagnetic shield member 1av. Moreover, the electromagnetic shielding member 1 surrounding the partial region located on the other side of the relay location in the second power cable 9v is referred to as a second-stage second electromagnetic shielding member 1bv.

  Similarly, the electromagnetic shield member 1 surrounding a partial region located on one side of the relay location in the third power cable 9w with reference to a certain relay location is referred to as a pre-stage third electromagnetic shield member 1aw. Moreover, the electromagnetic shielding member 1 surrounding the partial region located on the other side of the relay location in the third power cable 9w is referred to as a subsequent third electromagnetic shielding member 1bw.

  The three pairs of conductive members 3 included in the relay short-circuit member 2 are located on both sides of the relay location where the relay short-circuit member 2 is disposed and electrically connect the two electromagnetic shield members 1 surrounding the different power cables 9. Connect to.

  The three pairs of conductive members 3 included in each relay short-circuit member 2 include a pair of first conductive members 3uv, a pair of second conductive members 3vw, and a pair of third conductive members 3uv. The first conductive member 3uv is a conductive member that electrically connects the first-stage first electromagnetic shield member 1au and the second-stage second electromagnetic shield member 1bv. The second conductive member 3vw is a conductive member that electrically connects the front second electromagnetic shield member 1av and the rear third electromagnetic shield member 1bw. The third conductive member 3uw is a conductive member that electrically connects the front third electromagnetic shield member 1aw and the rear first electromagnetic shield member 1bu.

  In the above description, for the sake of convenience, it is assumed that the first power cable, the second power cable, and the third power cable are power cables 9 that conduct alternating current electricity of u-phase, v-phase, and w-phase, respectively. Yes. However, the correspondence relationship between the first power cable, the second power cable, and the third power cable and the u-phase, v-phase, and w-phase is not limited to the example described above.

  The conductive member 3 is a metal fitting made of a material mainly composed of a metal such as iron, stainless steel, or aluminum. Note that the conductive member 3 is preferably made of the same kind of material as the conductive material constituting the electromagnetic shield member 1.

  In the example shown in FIG. 3, the three conductive members 3uv, 3vw, 3uw and the three conductive members 3uv, 3vw, 3uw opposed to the three conductive members 3uv, 3vw, 3uw serve as end portions of the six electromagnetic shield members 1 located at the relay points. Combined in a sandwiched state.

  Each of the three conductive members 3uv, 3vw, and 3uw has two groove portions 31 and one connection portion 32 that connects the two groove portions 31.

  The groove 31 is a groove-like portion into which the end of each of the six electromagnetic shield members 1 located at the relay location is fitted. At the relay location of the electromagnetic shield member 1, the end portion of the electromagnetic shield member 1 has three conductive member 3uv, 3vw, 3uw groove portions 31 and the other three conductive member 3uv, 3vw, 3uw groove portions 31 facing them. Thus, the electromagnetic shield member 1 and the groove 31 are electrically connected.

  The connecting portion 32 is a portion that holds the two groove portions 31 in a fixed positional relationship with an interval and electrically connects the two groove portions 31.

  Of the three pairs of conductive members 3uv, 3vw, 3uw, the three conductive members 3uv, 3vw, 3uw are formed integrally with one of the pair of exterior members 4, and the remaining three conductive members 3uv, 3vw , 3 uw are formed integrally with the other of the pair of exterior members 4.

  Each of the exterior members 4 is a non-conductive member that covers the outer surfaces of the three conductive members 3uv, 3vw, and 3uw. For example, the exterior member 4 is a synthetic resin molded member. In this case, the exterior member 4 is made of a material such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or polyamide (PA). In addition, the exterior member 4 is configured integrally with the three conductive members 3uv, 3vw, 3uw by, for example, two-color molding.

  The exterior member 4 is formed with a partition wall 42 that partitions between the end portion of the preceding electromagnetic shield member 1 and the end portion of the subsequent electromagnetic shield member at the relay location. More specifically, the partition wall 42 is formed between the end portion of the first-stage first electromagnetic shield member 1au and the end portion of the second-stage first electromagnetic shield member 1bu, and the end portion of the first-stage second electromagnetic shield member 1av and the second-stage second electromagnetic shield member 1av. Partitioning is made between the end portion of the electromagnetic shield member 1bv and between the end portion of the front third electromagnetic shield member 1aw and the end portion of the rear third electromagnetic shield member 1bw.

  However, the ridgeline of the partition wall 42 is formed in a concave shape so that each of the three power cables 9 can penetrate the portion of the partition wall 42.

  The pair of exterior members 4 collectively clamps the end portions of the six electromagnetic shield members 1 located on both sides of the relay location via the three pairs of conductive members 3uv, 3vw, 3uw. Further, the pair of exterior members 4 are connected by a connector in a state where the ends of the six electromagnetic shield members 1 are collectively held. As a result, the three pairs of conductive members 3uv, 3vw, and 3uw are held in close contact with the end portions of the corresponding electromagnetic shield members 1.

  In the example shown in FIG. 3, the coupling tool is a screw 51 and a nut 52. Therefore, a screw hole 41 through which a connecting screw 51 is passed is formed in the pair of exterior members 4 shown in FIG.

  Since the relay short-circuit member 2 includes the exterior member 4, when the wire harness 10 is laid in the vehicle, the relay location of the electromagnetic shield member 1 is excessively close to the surrounding conductive member such as the body of the automobile. Or contact. That is, the exterior member 4 serves as a spacer that holds the three pairs of conductive members 3uv, 3vw, and 3uw in a fixed positional relationship and electrically insulates the electromagnetic shield member 1 from the surrounding members.

  The exterior member 4 is an example of a non-conductive clamping member that collectively clamps the ends of the six electromagnetic shield members 1 located on both sides of the relay location via the conductive member 3.

<Effect>
In the wire harness 10, the three power cables 9 that conduct electricity of symmetrical three-phase alternating current are individually surrounded by at least nine electromagnetic shielding members 1 for each of at least three partial regions that are divided. Therefore, electromagnetic induction due to the alternating current of each phase flowing through each of the three power cables 9 occurs individually for each electromagnetic shield member 1.

  However, at each of at least two relay locations, the two electromagnetic shield members 1 surrounding the power cables 9 that conduct AC electricity of different phases are electrically connected by three pairs of conductive members 3uv, 3vw, 3uw. ing. Therefore, in the nine electromagnetic shield members 1 surrounding the three partial regions in the three power cables 9, the three-phase electromagnetic induction electricity having different phases are mixed and cancel each other. As a result, an excessive electromagnetic induction current is prevented from flowing through the electromagnetic shield member 1.

  By the way, the current in the electromagnetic shield member 1 is only shifted in phase of the induced current only by mixing the induced currents of two different phases. That is, in the wire harness 10, the current in the electromagnetic shield member 1 is canceled for the first time when induced currents of three different phases are mixed.

  In other words, the current in the electromagnetic shield member 1 is canceled by mixing the electromagnetic induction currents in the three power cables via the relay short-circuit member 2. Therefore, in the plurality of electromagnetic shield members 1 that are electrically connected by the relay short-circuit member 2, the mutual inductance between each of the three power cables 9 and the electromagnetic shield member 1 is substantially the same, that is, the first The total length of the electromagnetic shielding member 1 surrounding the one power cable 9u, the total length of the electromagnetic shielding member 1 surrounding the second power cable 9v, and the length of the electromagnetic shielding member 1 surrounding the third power cable 9w. It is efficient that the relay short-circuit member 2 is arranged so that the total is almost the same.

  Further, in the wire harness 10, the three power cables 9 are arranged in parallel at a distance from each other by the pair of exterior members 4 constituting the relay short-circuit member 2 together with the electromagnetic shield member 1 surrounding them. Held in. Thereby, the inconvenience which causes a spark discharge when the electromagnetic shielding members 1 approach too much can be avoided. Further, since the relay short-circuit member 2 also serves as a spacer that maintains the distance between the electromagnetic shield members 1 surrounding the three power cables 9, the effect of reducing the number of parts can be obtained. Further, unlike the case where the power cable 9 and the electromagnetic shield member 1 are passed through the cylindrical members from their end portions, the exterior member 4 of the relay short-circuit member 2 is an electromagnetic shield member that is an intermediate portion of the power cable 9 It can be easily attached to one relay location.

Second Embodiment
Next, a wire harness 10A according to a second embodiment of the present invention and a relay short-circuit member 2A provided therein will be described with reference to FIG. FIG. 4 is an exploded perspective view of the main part of the wire harness 10A. 4, the same components as those shown in FIGS. 1 to 3 are given the same reference numerals. Hereinafter, only the differences of the wire harness 10A from the wire harness 10 will be described.

  Similar to the wire harness 10, the wire harness 10 </ b> A includes three power cables 9, nine or more electromagnetic shield members 1 divided by two or more relay locations, and two or more provided at each relay location. Relay shorting member 2A. FIG. 4 shows only one relay portion in the wire harness 10A.

  The relay short-circuit member 2 </ b> A has a configuration in which a fastener 6 is added compared to the relay short-circuit member 2. The fastener 6 is a well-known tool that is fastened to an edge of a through hole of a plate-like support such as a vehicle body panel. The fastener 6 is made of a nonconductive material that is integrally connected to the relay short-circuit member 2.

  The fastener 6 is, for example, a synthetic resin molded member. In this case, the fastener 6 is made of a material such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), or polyamide (PA).

  The fastener 6 includes an insertion portion 61 that is inserted into an attachment hole that is a through-hole of a plate material, and a flange portion 62 to which the exterior member 4 is fixed. The fastener 6 sandwiches the edge portion of the attachment hole by the insertion portion 61 and the flange portion 62.

  The exterior member 4 is fixed to one surface of the flange portion 62, and the insertion portion 61 is erected on the other surface. The flange portion 62 is formed in a dish shape having an area larger than the area of the mounting hole so as to close the mounting hole.

  When the insertion portion 61 is inserted into the mounting hole, the portions protruding on both sides are pressed against the edge of the mounting hole and contract to the width of the mounting hole. When the insertion portion 61 is further pushed into the inside of the mounting hole, the shape of the portion protruding to both sides is restored until the width of the back side of the edge of the mounting hole becomes larger than the width of the mounting hole. As a result, the protruding portion on both sides of the insertion portion 61 and the flange portion 62 sandwich the edge of the mounting hole from both the front and back sides. As a result, the fastener 6 is fixed to the mounting hole portion of the plate material.

  10 A of wire harnesses are provided with the nonelectroconductive fastener 6 connected with 2 A of relay shorting members. Therefore, in the process of laying the wire harness 10A in the automobile, the work of fixing the relay location of the electromagnetic shield member 1 to a support body such as the body of the automobile is facilitated.

<Others>
In each embodiment, the pair of exterior members 4 of the relay short-circuit members 2 and 2 </ b> A are connected by screws 51 and nuts 52. However, it is also conceivable that the pair of exterior members 4 have a structure that can be connected without using a connector such as the screw 51. For example, it is also conceivable that the pair of exterior members 4 are connected by a welding or anchoring mechanism or the like.

  It is also conceivable that the pair of exterior members 4 are integrally formed by having a structure that is continuous at one end of each.

  Further, a configuration in which one of the pair of conductive members 3uv, 3vw, and 3uw is omitted in the relay short-circuit members 2 and 2A is also conceivable. That is, each of the relay short-circuit members 2 and 2A only needs to include at least three conductive members 3 that electrically connect the two electromagnetic shield members 1 in the manner described above.

DESCRIPTION OF SYMBOLS 1 Electromagnetic shielding member 2, 2A Relay short circuit member 3 Conductive member 4 Exterior member (clamping member)
6 Fastener 7 Housing 8 Terminal fitting 9 Power cable 10, 10A Wire harness 31 Groove portion 32 Connection portion 41 Screw hole 42 Partition wall 51 Screw 52 Nut 61 Insertion portion 62 Flange portion 70 Reference potential body 71 Connection fitting 91 Core wire 92 Insulation coating 1 au First stage first electromagnetic shield member 1 av First stage second electromagnetic shield member 1 aw First stage third electromagnetic shield member 1 bu Rear stage first electromagnetic shield member 1 bv Second stage electromagnetic shield member 1 bw Second stage electromagnetic shield member 3 uv First conductive member 3 vw Second Conductive member 3u Third conductive member 9u First power cable 9v Second power cable 9w Third power cable

Claims (3)

Three power cables arranged in parallel at intervals and conducting electricity of symmetrical three-phase alternating current;
In each of the three power cables, at least nine conductive electromagnetic shielding members individually surrounding each of at least three partial areas divided at at least two relay points;
At least two conductive members that are disposed at each of the relay locations, respectively, are located on both sides of the relay location and electrically connect the two electromagnetic shield members that surround different power cables. A wire harness comprising two relay short-circuit members. The wire harness according to claim 1,
Each of the relay short-circuit members has a non-conductive clamping member that collectively clamps the end portions of the six electromagnetic shield members located on both sides of the relay location via the conductive member. The wire harness according to claim 2,
The wire harness further provided with the nonelectroconductive fastener connected with the said relay short circuit member, and fastened to the edge of the through-hole of a plate-shaped support body.

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